. >> the wife told us he has friends in mexico, which led you see to believe he would be head he had in that direction. >> reporter: guler is turkish, 22 years old, about 6 feet, 120 pounds. police say he had a recurring argument with the baby's mother about wanting to move back to new york. police think he is driving a 2004 gmc envoy similar to this one, california license 6hil892, with a large american eagle decal on the rear window. >> we immediately notified the border patrol of the license plate, vehicle description and his description. we don't believe he crossed the border at this time. >> reporter: so of police have been unwilling -- so far police have been unwilling to discuss any criminal history he may have had. anne makovec, kpix 5. >>> in less than an hour, san francisco authorities are expected to release details on their investigation into the patient found dead in a hospital stairwell. questions are also being raised about a potential witness being sought in the case. that witness reportedly told a hospital worker that he saw 57- year-old lynne spalding lying in the s